Jobs could open and close Windows, pull down menus, and see how the system would work.

乔布斯可以打开和关闭窗口，下拉菜单，观察系统如何运行。

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With the delicate landscape design, the fluent water system, the open and close space and natural architectural style, the residential is becoming a beautiful landmark of the city.

整个小区景观自然流畅有主有次，有分有合，结合现代雅致的建筑形式构成了城市一道美丽的风景线。

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With the help of the method, the control accuracy similar to that of close loop system can be obtained and the system has the same stability as that of open loop system.

采用这种控制方式，可以获得类似闭环系统的控制精度和开环系统的稳定性。

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It took Schaeffer only five months to analyze the setup and write code that would let him, from his laptop, tell the Scada system to open and close enough breakers to bring down the mock utility--without letting the legitimate operator see what was going on.

FORBES: The Next Threat